U-Turn Laws & Rules
A U-turn allows you to reverse direction by turning 180 degrees. While convenient, U-turns are heavily regulated due to safety concerns. The legality of a U-turn depends on location, visibility, posted signs, and state law. This guide explains when and where U-turns are allowed, prohibited, and the specific rules for crossing double yellow lines.
Safety First
Even when a U-turn is technically legal, it may not be safe. You must have adequate sight distance (typically 200+ feet in both directions), yield to all traffic and pedestrians, and complete the turn without interfering with other vehicles. When in doubt, find a safer place to turn around.
U-Turn Guides
U-Turn Across Double Yellow Lines
When can you legally make a U-turn across a double yellow centerline?
- ✓State-by-state rules for U-turns across double yellow
- ✓Sight distance requirements
- ✓Posted sign restrictions
- ✓Exceptions for driveways and intersections
U-Turn General Rules
Basic U-turn regulations and when they're permitted
- ✓Where U-turns are generally allowed
- ✓Common prohibited locations (curves, hills, near railroad crossings)
- ✓Yielding requirements during U-turns
- ✓Traffic signal and sign compliance
Where U-Turns Are Prohibited
Even if not explicitly posted, U-turns are typically illegal in these locations:
⛔Railroad Crossings
U-turns are prohibited on or near railroad crossings in all states
Distance: Typically within 100 feet
⛔Curves & Hills
Where you cannot see at least 200 feet in both directions
Distance: Sight distance varies by state
⛔Intersections with Traffic Signals
Unless a sign permits it or you're in a designated left-turn lane
Distance: Varies by state
⛔Business Districts
Many states prohibit U-turns in business districts unless signed
Distance: Check local ordinances
⛔Highway Shoulders
On controlled-access highways (interstates, freeways)
Distance: Use designated turnarounds only
⛔Fire Stations
Within a certain distance of fire station driveways
Distance: Typically 75-100 feet
Always check for signs: Even if a location isn't listed above, a "NO U-TURN" sign makes the maneuver illegal. Posted signs take precedence over general rules.
General U-Turn Rules
✓What You Must Do
- •Check for signs: Obey all "NO U-TURN" and directional signs
- •Ensure sight distance: See at least 200 feet (or state requirement) in both directions
- •Yield to all traffic: You do not have right-of-way during a U-turn
- •Use turn signal: Signal your intention to turn left before starting the maneuver
- •Complete safely: Finish the turn without disrupting traffic flow
✗What You Must Not Do
- •Ignore posted signs: "NO U-TURN" signs are legally enforceable
- •Turn on curves/hills: Where you cannot see oncoming traffic
- •Cross painted medians: Two sets of double yellow = barrier (use openings only)
- •Disrupt traffic: Causing other vehicles to brake or change lanes
- •Turn on highways: On controlled-access roads (use exits and turnarounds)
State-Specific U-Turn Laws
U-turn laws vary significantly by state. Some states allow U-turns almost anywhere safe, while others restrict them heavily. Always check your state's laws:
Related Topics
Frequently Asked Questions
Do I need to use my turn signal for a U-turn?
Yes, you must signal your intention to turn left before starting a U-turn. This alerts other drivers to your maneuver and helps prevent collisions.
Can I make a U-turn at a red light?
Generally no, unless you're in a designated left-turn lane with a sign permitting U-turns. You must wait for a green light or green arrow, and even then, check for prohibitory signs.
What's the penalty for an illegal U-turn?
Penalties vary by state but typically include a fine ($100-$250), possible points on your license, and in some cases increased insurance rates. Repeat offenses or U-turns that cause accidents may result in higher penalties.